Does Grass-Fed Beef Contain Selenium? The Surprising Truth
                                
                                
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                                    5 min read                                
                            
                                While many assume the diet of cattle is the sole factor, a review published in the journal *Molecules* in 2016 revealed that soil selenium levels significantly determine the mineral content of forage, which directly impacts the nutrient profile of grass-fed beef. So, does grass-fed beef contain selenium, and is it a reliable source?